Simple Data Grid Question

Sally

Hello all you talented VB people! I'm new to VB.Net and have 2 quick data grid questions...

I have a data grid on my form. I am displaying only specific columns from my sql table on my data grid. All the columns in my data grid currently display data exactly as they appear in my table.

Question 1:
One of these columns displays values like 1, 2, 3... 10. How do I format this column so that it will display the characters: A, B, C... J instead? In other words, I want my grid to convert the value 1 to A, 2 to B, and 3 to C.

Question 2:
What is the syntax to add a new column to the data grid, that does not "bind" to a column in my sql table. This column is in the grid just to display some information in the grid, but does not correspond to a column in my sql table.

Thanks to all who respond. Much appreciated!
Sally